Window holding device



my W5@ E. E. FQSTER WINDOW HOLDING DEVICE Filed April 25, 1946 Patented dan. 31, 1950 STATES ATENT OFFICE 12 Claims.

The present invention relates to a Window holding device which will permit the easy raising of a window but will act to hold the window in any position along its entire extent of movement. In other words, the window will remain in its travel in its frame wherever it may be desired or left, and this device eliminates the necessity or" the usual cord pulley and weight structure.

It is therefore an object of the invention to provide a very simple device for holding a window sash at whatever point or position it may be left or where it is desired to position the same, at the same time to prevent rattling due to the wind or vibration. A further object resides in providing a window holding device which offers practically no resistance when the window is raised but which will immediately hold the window at the desired location simply by taking the hand or hands away from the window. A still further object resides in a structure in which a shoe member is held and shifted by a simple double spring which is mounted in the windowV sash and which is adjustable.

Further objects will be apparent from the following description when considered in connection with the accompanying drawing in which:

Figure l is a sectional view of the holding device mounted in a window frame with the parts of the holder positioned when the window is raised,

Figure 2 is a similar View with the parts of the holder in the position wherein the sash is being lowered,

Figure 3 is a sectional View taken on line r3 3 of Figure 1 in the direction of the arrows,

Figure 4 is a cross section taken on line 4 4 of Figure 1 in the direction of the arrows, and

Figure 5 is an exploded view of the holder.

It is of course understood that one or any number of holding devices may be provided on any window but for the purpose of illustrating and describing the invention the drawing shows the holding device mounted in a window sash I I which is slidable in a frame it, Figs. 1, 2 and 4, showing the pane I3 of glass. The window is provided with the usual guide strips I2 and III as best shown in Fig. 4.

The holding friction device consists of the friction shoe I, a spring 3, pins 2 and 4, a cylindrica] housing E, which has flattened sides adjacent the inner end thereof asshown in Figure 3, and an adjusting screw member s with a nut 'I which latter cooperates with a screw spindle 6 secured to the closed end I8 of the cylinder 5,

2 ,The screw member 8 is preferably integral with the nut 'I and a disc 1. The shoe I is U-shaped in cross section which is engaged midway between its ends by the pin 2. The shoe moves longitudinally relative to thewindow frame I0 in a slot I9 in the sash II and is provided-with a right angle stop member or limit stop e secured on theinside of the U to cooperate with the cylinder 5. The spring 3 is'doubled on itself having thus a main' portion 20 and an auxiliary portion I'! interconnectedat one end by an integra1 eye I6. The other end of the main section 20 is provided with a secondeye I5 in which the pin 2 is provided. The eye I6 receives a second pin d which latter is journaled in the cylinder 5.

The friction shoe I rubs or slides against the side ofthe frame I and causes the opposite side of the sash II to t firmly against the opposite frame side, (not shown). As the sash is 'being raised, as shown in Fig. l, the shoe member I is held rmly against the frame is, due to the tendency of the leaf springv 3, section 20, to spread. The lower tapered end I'I of the leaf spring reacts against the lower inside edge or surfacerof the cylinder 5- and the top part 2G of y the leaf springlifts the shoe I upward and causes the device to act similar to an over-running clutch and holds the sash II in any position to which it is lifted. When the sash is pulled downward, as in Fig- 2, the shoe I, due to its frictional contact with the frame I0 tends to remain in the same relative position on the frame lIll as in Fig.1, and the sash moves the cylinder 5 and the pin s downward until the cylinder 5l contacts the limit stop. 9 ina Yposition where the. pin li and the pin 2 are in a` horizontal plane.r

During this downward movement of the sash, the upper portion 26 of the springs hasbuckled and permitted the two `eyeportionsl and IIS the position shown in Fig. 2, the shoe- I remains.

stationary in relation to the frame Il! until the sash has been raised to about the same relation- ,Ship as shown in Fig. l.

To install the device in a Window it is necessary to drill a hole into the side of the sash to accommodate the cylinder 5 and then chisel out a space or slot I9 for the shoe I. When the device is inserted, the adjustment screw 8 should be turned so that the disc 'l' thereof will be against the end of the cylinder 5. After the cylinder is placed into the hole in the sash and placed into position in the window frame, the guide members I2 and I4 are nailed into position, the adjustment screw 8 can then be turned until the cylinder 5 has moved away from the disc 1', until the shoe member I is forced against the frame I0 with sufficient friction to prevent the sash from being lowered or fall of its own weight.

One of the important functions of this device is to prevent the window from rattling and to make the window more silent in its opening and closing operations or movements.

It is possible to provide a positive locking device against opening the window from a certain position to prevent unauthorized entry by forcing the sash up or down. This could be accomplished by having an auxiliary link (not shown) between the pins 2 and Il which could be made rigid instead of yielding as the upper portion of the leaf spring. This locking device could be engaged or disengaged at the option of the operator.

I claim as my invention:

1. A window holding device comprising a housing provided in a window sash, a friction shoe adapted to slide on a window frame, a double leaf spring in two sections pivotally mounted in the housing and of which one section is connected to the shoe and the other end presses against the inside surface of the housing, and means for adjusting the housing laterally in the window frame to adjust the force which the shoe will exert against the window frame by the spring.

2. A Window holding device comprising a housing provided in a window sash, a friction shoe adapted to slide on a window frame, a double leaf spring in two sections pivotally mounted in the housing and of which one section is connected to the shoe and the other end presses against the inside surface of the housing, means for adjusting the housing laterally in the window frame to adjust the force which the shoe will exert against the window frame by the spring, and means on the shoe to act as a stop for limited movement of the shoe relative to the housing.

3. A window holding device comprising a housing provided in a window sash, a friction shoe adapted to frictionally slide against the side of a window frame, a spring member doubled on itself consisting of a main portion and an auxiliary portion and pivotally mounted at its joined ends in the housing and the main portion projecting from the housing, said spring being pivotally mounted to the shoe and the auxiliary portion contacting the housing, and means for adjusting the position of the housing in the sash to adjust the tension of the main portion of the spring on the shoe, said main portion of the spring flexing and movable on its pivot points so that the window may be raised with practically no resistance from the spring and the latter holding the window in its adjusted position.

4. A window holding device according to claim 3, in which a pair of pins are provided one for the pivotal connection of the spring with the shoe and the other at the pivotal connection of the spring in the housing.

5. A window holding device according to claim 3, in which a stop member is provided on the shoe cooperating with the housing to limit a relative movement of the shoe and the housing.

6. A window holding device comprising a housing secured on a window sash and having an opening at one end and a closed end at the other end, a screw-threaded spindle at the closed end of the housing, a shoe member adapted to contact and slide on a Window frame, a spring pivotally mounted in the housing and pivotally connected to the shoe member so that it can flex between these two pivotal mountings, means cooperating with the spindle to adjust the housing in the sash toward or away from the shoe member and thereby adjust the force of the spring on the shoe, and means for limiting movement of the shoe relative to the housing to fiex the spring to its maximum limit so that the shoe will hold the window in any raised position.

7. A window holding device according to claim 6, in which the spring is doubled on itself to form two portions of which one portion is connected to the shoe and the other portion abuts against the housing.

8. A window holding device according to claim 6, in which the housing adjusting means is in the form of a disc and nut with the latter in threaded engagement with the spindle and the disc forming an abutment against the sash.

9. A window holding device comprising a housing secured in a window sash, a shoe adapted to frictionally slide on a window frame, and a leaf spring member pivotally connected in the housing at one end and to the shoe at the other end to apply a holding force on the shoe, said spring being doubled on itself at the pivotal connection to form two sections integrally connected of which one section is connected to the shoe and housing and the other section abuts against the housing.

l0. A window holding device comprising a housing, a shoe adapted to frictionally slide on a part of a window assembly, and a leaf spring pivotally mounted at one end to the shoe and the other end in the housing so that the spring will be flexed between the pivot points, said shoe having movement relative to the housing to flex or unflex the tension in the spring.

1l. A window holding device according to claim 10, in which the shoe is provided with a stop member to abut against the housing to limit REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,437,672 Nelson Dec. 5, 1922 A1,877,465 Kimbro Sept. 13, 1932 

